Eric, for what it's worth, I'll attach below a table I made when re-wiring my Ulster rep.
This was scribbled on the back of a metaphorical envelope, it's not wired as standard, and I'm not 100% sure these are the sizes I ended up with (don't take it as 'gospel'); but it may help as a guide.
My advice is use the biggest wires you can find which will fit through your grommets and into end connectors - the more copper there is (width-wise), the less resistance. You might find it worthwhile to buy a small sample of each size from your supplier first so you can do the arithmetic or test fit.
Don't rely on earth return through bodywork - wherever possible arrange an earth cable back to battery.
Braided or armoured cable looks much prettier.
FWIW, some of the wiring I removed (typical stuff Halfords sell for modern cars) had melted its insulation (on 6V) & was a hair's breath from disaster.
Best of luck!
333.jpg (Size: 118.52 KB / Downloads: 151)
This was scribbled on the back of a metaphorical envelope, it's not wired as standard, and I'm not 100% sure these are the sizes I ended up with (don't take it as 'gospel'); but it may help as a guide.
My advice is use the biggest wires you can find which will fit through your grommets and into end connectors - the more copper there is (width-wise), the less resistance. You might find it worthwhile to buy a small sample of each size from your supplier first so you can do the arithmetic or test fit.
Don't rely on earth return through bodywork - wherever possible arrange an earth cable back to battery.
Braided or armoured cable looks much prettier.
FWIW, some of the wiring I removed (typical stuff Halfords sell for modern cars) had melted its insulation (on 6V) & was a hair's breath from disaster.
Best of luck!
333.jpg (Size: 118.52 KB / Downloads: 151)